<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>window.cpp 示例文件 | Qt Widgets 5.12.3</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
    // loading style sheet breaks anchors that were jumped to before
    // so force jumping to anchor again
    setTimeout(function() {
        var anchor = location.hash;
        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td ><a href="../qtdoc/index.html">Qt 5.12</a></td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-painting-transformations-example.html">Transformations Example</a></td><td >window.cpp 示例文件</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.3 参考指南</a></td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">window.cpp 示例文件</h1>
<span class="subtitle">painting/transformations/window.cpp</span>
<!-- $$$painting/transformations/window.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  <span class="preprocessor">#include &quot;window.h&quot;</span>

  <span class="preprocessor">#include &lt;QComboBox&gt;</span>
  <span class="preprocessor">#include &lt;QGridLayout&gt;</span>

  Window<span class="operator">::</span>Window()
  {
      originalRenderArea <span class="operator">=</span> <span class="keyword">new</span> RenderArea;

      shapeComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
      shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Clock&quot;</span>));
      shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;House&quot;</span>));
      shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Text&quot;</span>));
      shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Truck&quot;</span>));

      <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
      layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(originalRenderArea<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
      layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(shapeComboBox<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);

      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i) {
          transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> RenderArea;

          operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
          operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;No transformation&quot;</span>));
          operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Rotate by 60\xC2\xB0&quot;</span>));
          operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Scale to 75%&quot;</span>));
          operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Translate by (50, 50)&quot;</span>));

          connect(operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
                  <span class="keyword">this</span><span class="operator">,</span> SLOT(operationChanged()));

          layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> i <span class="operator">+</span> <span class="number">1</span>);
          layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> i <span class="operator">+</span> <span class="number">1</span>);
      }

      setLayout(layout);
      setupShapes();
      shapeSelected(<span class="number">0</span>);

      setWindowTitle(tr(<span class="string">&quot;Transformations&quot;</span>));
  }

  <span class="type">void</span> Window<span class="operator">::</span>setupShapes()
  {
      <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> truck;
      truck<span class="operator">.</span>setFillRule(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>WindingFill);
      truck<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">87.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">60.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">10.0</span><span class="operator">,</span> <span class="number">60.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">35.0</span><span class="operator">,</span> <span class="number">35.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">100.0</span><span class="operator">,</span> <span class="number">35.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">100.0</span><span class="operator">,</span> <span class="number">87.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">87.0</span>);
      truck<span class="operator">.</span>moveTo(<span class="number">17.0</span><span class="operator">,</span> <span class="number">60.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">55.0</span><span class="operator">,</span> <span class="number">60.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">55.0</span><span class="operator">,</span> <span class="number">40.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">37.0</span><span class="operator">,</span> <span class="number">40.0</span>);
      truck<span class="operator">.</span>lineTo(<span class="number">17.0</span><span class="operator">,</span> <span class="number">60.0</span>);
      truck<span class="operator">.</span>addEllipse(<span class="number">17.0</span><span class="operator">,</span> <span class="number">75.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);
      truck<span class="operator">.</span>addEllipse(<span class="number">63.0</span><span class="operator">,</span> <span class="number">75.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);

      <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> clock;
      clock<span class="operator">.</span>addEllipse(<span class="operator">-</span><span class="number">50.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">50.0</span><span class="operator">,</span> <span class="number">100.0</span><span class="operator">,</span> <span class="number">100.0</span>);
      clock<span class="operator">.</span>addEllipse(<span class="operator">-</span><span class="number">48.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">48.0</span><span class="operator">,</span> <span class="number">96.0</span><span class="operator">,</span> <span class="number">96.0</span>);
      clock<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
      clock<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">2.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">2.0</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">42.0</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">2.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">2.0</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
      clock<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">2.732</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.732</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">24.495</span><span class="operator">,</span> <span class="number">14.142</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">0.732</span><span class="operator">,</span> <span class="number">2.732</span>);
      clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);

      <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> house;
      house<span class="operator">.</span>moveTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
      house<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">45.0</span>);
      house<span class="operator">.</span>lineTo(<span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
      house<span class="operator">.</span>lineTo(<span class="number">45.0</span><span class="operator">,</span> <span class="number">45.0</span>);
      house<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="number">45.0</span>);
      house<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
      house<span class="operator">.</span>addRect(<span class="number">15.0</span><span class="operator">,</span> <span class="number">5.0</span><span class="operator">,</span> <span class="number">20.0</span><span class="operator">,</span> <span class="number">35.0</span>);
      house<span class="operator">.</span>addRect(<span class="operator">-</span><span class="number">35.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">15.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);

      <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> text;
      <span class="type"><a href="../qtgui/qfont.html">QFont</a></span> font;
      font<span class="operator">.</span>setPixelSize(<span class="number">50</span>);
      <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> fontBoundingRect <span class="operator">=</span> <span class="type"><a href="../qtgui/qfontmetrics.html">QFontMetrics</a></span>(font)<span class="operator">.</span>boundingRect(tr(<span class="string">&quot;Qt&quot;</span>));
      text<span class="operator">.</span>addText(<span class="operator">-</span><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(fontBoundingRect<span class="operator">.</span>center())<span class="operator">,</span> font<span class="operator">,</span> tr(<span class="string">&quot;Qt&quot;</span>));

      shapes<span class="operator">.</span>append(clock);
      shapes<span class="operator">.</span>append(house);
      shapes<span class="operator">.</span>append(text);
      shapes<span class="operator">.</span>append(truck);

      connect(shapeComboBox<span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(shapeSelected(<span class="type">int</span>)));
  }

  <span class="type">void</span> Window<span class="operator">::</span>operationChanged()
  {
      <span class="keyword">static</span> <span class="keyword">const</span> Operation operationTable<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
          NoTransformation<span class="operator">,</span> Rotate<span class="operator">,</span> Scale<span class="operator">,</span> Translate
      };

      <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator">&lt;</span>Operation<span class="operator">&gt;</span> operations;
      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i) {
          <span class="type">int</span> index <span class="operator">=</span> operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>currentIndex();
          operations<span class="operator">.</span>append(operationTable<span class="operator">[</span>index<span class="operator">]</span>);
          transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>setOperations(operations);
      }
  }

  <span class="type">void</span> Window<span class="operator">::</span>shapeSelected(<span class="type">int</span> index)
  {
      <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> shape <span class="operator">=</span> shapes<span class="operator">[</span>index<span class="operator">]</span>;
      originalRenderArea<span class="operator">-</span><span class="operator">&gt;</span>setShape(shape);
      <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i)
          transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">&gt;</span>setShape(shape);
  }

</pre>
</div>
<!-- @@@painting/transformations/window.cpp -->
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</acronym> 2019 The Qt Company Ltd.
   Documentation contributions included herein are the copyrights of
   their respective owners.<br/>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br/>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
   of their respective owners. </p>
</div>
</body>
</html>
